Best Time to Fly BOS to LAS: On-Time Stats by Hour & Airline
Logan International → Harry Reid International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 75.5% of Boston (BOS) to Las Vegas (LAS) flights arrived on time (1,609 scheduled flights). That is 2.1 points below the national average of 77.6%.
Delta Air Lines was the most punctual of the 2 airlines on the route at 77.9%, while JetBlue trailed at 74.2%.
November has been the best month (87% on time) and Sunday the weakest day of the week (74%).
1.2% of flights were cancelled, versus 1.8% nationally.
BOS to LAS on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| Delta Air Lines | 77.9% | 56 min | 1.2% | 564 |
| JetBlue | 74.2% | 73 min | 1.2% | 1,045 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly BOS to LAS
On-time arrival % by scheduled departure hour (local time), 3,425 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | Limited data | 12 | |
| 6am–7am | 92.8% | 0.0% | 262 |
| 7am–8am | 81.0% | 0.7% | 942 |
| 8am–9am | 85.5% | 0.7% | 306 |
| 9am–10am | 86.2% | 0.0% | 110 |
| 10am–11am | 78.7% | 2.0% | 201 |
| 11am–12pm | 76.5% | 0.7% | 154 |
| 12pm–1pm | Limited data | 24 | |
| 3pm–4pm | Limited data | 24 | |
| 4pm–5pm | 70.5% | 0.0% | 133 |
| 5pm–6pm | 71.2% | 0.3% | 368 |
| 6pm–7pm | 76.4% | 1.2% | 404 |
| 7pm–8pm | 67.1% | 1.1% | 358 |
| 8pm–9pm | 62.3% | 2.5% | 79 |
| 9pm–10pm | 64.6% | 0.0% | 48 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on BOS to LAS
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 83.3% | +4.5 pts | 0.0% | 54 |
| Christmas & New Year (Dec 20 - Jan 3) | 71.2% | -7.7 pts | 1.9% | 108 |
| Summer peak (Jun 15 - Aug 15) | 72.9% | -5.9 pts | 1.1% | 451 |
| All other days | 78.8% | — | 0.7% | 2,812 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).